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153 votes
Accepted

What place on Earth is closest to the Sun?

This is an interesting question, but it lacks a key factor that is crucial to the answer: TIME. The point on Earth closest to the Sun varies through time, so the question can be asked about any ...
Camilo Rada's user avatar
  • 17.6k
14 votes

Does the elliptical orbit of the Earth have effect on Earth's climate?

Short answer. When the Earth is closest to the sun in January that softens the seasonal variation in the Northern Hemisphere and it increases the seasonal variation in the Southern Hemisphere, so ...
userLTK's user avatar
  • 5,847
10 votes

Does general relativity influence climate (vs Newtonian mechanics)

In short: No. Unless multi-million timescales are considered. The reason we keep teaching Newtonian mechanics, is because it is a VERY accurate approximation of a more general theory (general ...
Camilo Rada's user avatar
  • 17.6k
10 votes

What place on Earth is closest to the Sun?

It is impossible to know. Solar flares can have more than 500,000 kilometers. So if we consider them part of the sun, the moment when the earth is closer to the sun can be very different from ...
Roberto's user avatar
  • 109
8 votes
Accepted

Why does more sunlight hits the equator than the ecliptic path?

The ecliptic path, is a well defined trajectory when displayed on the background of the fix stars like in the following figure (taken from physics.csbsju.edu) However, there is not such thing as an ...
Camilo Rada's user avatar
  • 17.6k
6 votes

Does the elliptical orbit of the Earth have effect on Earth's climate?

Yes, but this is not mainly due to the small intensity variation of sunlight with distance. Rather, the elliptical orbit affects the length of the seasons, which — along with other orbital effects — ...
gerrit's user avatar
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5 votes
Accepted

What Earth Science research will be done from the International Space Station?

NASA Space Station Research Explorer allows to filter experiments by expedition and category. A query for expedition 63 and the "Earth and space science" category yields the following 17 ...
Jean-Marie Prival's user avatar
5 votes
Accepted

What is the Moon's distance from viewer at horizon?

What is the Moon's distance from viewer at horizon? As noted by others, the moon follows an elliptical orbit, which will lead to the greatest change in distance regardless of the observation angle. ...
christopherlovell's user avatar
4 votes

What place on Earth is closest to the Sun?

The point on the surface of the Earth where the Sun is currently immediately overhead is called the Zenith Point. Its Latitude and Longitude correspond to the Declination and Greenwich Hour Angle of ...
Dave Kimble's user avatar
4 votes

What is the Moon's distance from viewer at horizon?

The Moon's orbit is elliptical, not circular, and the maximum and minimum distance from the Moon to the center of the Earth (apogee and perigee, 405,385 and 363,630 km respectively) are much larger ...
DrGC's user avatar
  • 1,753
4 votes

What are the relative contributions of planets to the Milankovitch Cycles?

The tidal effect over time tends to circularize orbits. It's well known that Moon is being tidally pushed away from the Earth over time (about 1.5 inches a year). This effect is stronger when the ...
userLTK's user avatar
  • 5,847
3 votes

What does the precessional parameter measure?

What is usually shown in cyclic plots showing precession is the precession index ($e \cdot \sin\varpi$ where $e$ is the eccentricity and $\varpi$ is the moving longitude of the perihelion). It is ...
plannapus's user avatar
  • 5,348
3 votes

Does general relativity influence climate (vs Newtonian mechanics)

I don't see this point made, so I'll just add it. In very high gravitation situations orbital energy can be lost to "relativity" or more specifically, gravity waves. The primary relativistic effect ...
userLTK's user avatar
  • 5,847
3 votes

Does general relativity influence climate (vs Newtonian mechanics)

The latest positions that I am aware of say yes, but not in any useful way. From what I have read, the current prevailing opinion is that the weather of Earth is a chaotic system. Chaotic systems ...
Cort Ammon's user avatar
2 votes

Earth's orbit and historical sun-earth distance

Something that I noticed in your formula is that you are using 365 for the amount of days in a year. Perhaps trying it using 365.25 would be more correct as it accounts for the leap year. Please let ...
Peter Denton's user avatar
2 votes

What place on Earth is closest to the Sun?

There are some wonderful answers here, but I think a simplified plain English answer would be helpful. Barring any nearby mountains, and various foibles, the closest point to the sun at the June ...
xpusostomos's user avatar
2 votes

What place on Earth is closest to the Sun?

Whichever spot on the surface of the Earth is experiencing Lahaina Noon, or would be if it wasn't cloudy, is at the subsolar point and pointed directly at the Sun, moreso than any other point on Earth ...
WBT's user avatar
  • 300
1 vote

Which forces align objects with the rotation of the Earth and how?

I think what you are referring to is a geostationary orbit, judging from your statement: is still attracted to the same place on the Earth's surface despite all the rotations However, I think your ...
Fred's user avatar
  • 24.7k
1 vote

What place on Earth is closest to the Sun?

At any one specific moment the subsolar point is the point on Earth that is closest to the Sun at that specific moment. The subsolar point on a planet is the point at which its sun is perceived to be ...
M.A. Golding's user avatar
1 vote

Equator and Hours of Daylight

No. There is a difference in daylight according to latitude, but it is not because of proximity to the sun, and nor is there a significant difference in the total number of daylight hours in a year. ...
Semidiurnal Simon's user avatar
1 vote

Equator and Hours of Daylight

The Earth's equator is about 0.006% closer to the sun than the Earth's mean spin axis, so the effect of proximity to the sun on daylight hours is so small that my calculator - which has a register of ...
Gordon Stanger's user avatar

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